Had a similar "cloudy" experience last night. I set up the C11 with the Hyperstar, all the cables, polar aligned, all set. I waited until 2:00am. It was supposed to clear about that time. Humidity was so thick you could feel it raining on you like a mist. Went to bed at 3:00am tired and P***d off. Woke up at 7:00am to a blue sky.